The line `7x + 4y = 28` cuts the coordinate axes at `A ` and `B.` If `O` is the origin, then the ortho-centre of `OAB` is

The line 7x + 4y = 28 cuts the coordinate axes at A and B . If O is the origin , then the ortho-centre of DeltaOAB is "_______" .

A line passing through P(4,2) cuts the coordinate axes at A and B respectively. If O Is the origin, then the locus of the centre of the circum-circle of Delta OAB is

The tangent to the curve xy = 25 at any point on it cuts the coordinate axes at A and B , then the area of the triangle OAB is

The lines 2x+3y+19=0 and 9x+6y-17=0 cuts the coordinate axes in

The lines 2x+3y+19=0 and 9x+6y-17=0 cuts the coordinate axes in

The line bx+ay=3ab cuts the coordinate axes at A and B, then centroid of triangle Delta OAB is

A line passing through the point P(4,2) meets the x and y-axis at A and B respectively. If O is the origin, then locus of the centre of the circumcircle of triangle OAB is